管路阻尼敷层减振效果评估研究

Research on the isolation of pipe damping cladding

文章对舰船管道外表面进行了不同面积粘性阻尼敷设,从理论、仿真和试验三方面对阻尼的损耗因子、管道的振动传递损失进行了分析,建立了包含阻尼减振措施的管路声学评估方法,获得了阻尼材料在管路振动控制方面的应用方法和和规律。研究结果表明:管道与阻尼层的截面惯性矩对阻尼吸振效果起着关键作用,由于截面惯性矩的作用,管壁上敷设约束阻尼要优于自由阻尼。同时阻尼敷设位置也影响着吸振效果。

The loss factor and vibration transmission loss of pipes with damp cladding are studied. Vibration and acoustic evaluation method for pipes with damp cladding is developed and the application method and rules of damping material are acquired. The results show that the moment of inertia of pipe and damping have great influence on the vibration absorbing effect. For the pipe, constrain damping is better than the free damping. Also the damping location is of the same importantce.